On the one hand: COOL! VERY COOL!
On the other hand: Would you not rather be training?

I might just get the aikido3d one. Seems interesting enough, especially the "Turn on Uke & Nage’s hip radials to watch their centers interact." feature.

As to your comment, Jean, about videos; videos, no matter how well done, always seem a little flat. With this you can rotate around the action from any angle you wish. That might be very useful for some people...or a waste of $50. Time will tell.

Who knows, perhaps we are witnessing the birth of a fantastic learning tool (but of course there is no substitute for mat time).